I'm not sure whether to lay new boards direct onto joists or leave the original pine boards down and lay the new boards on them. The new ones which are also pine, are 21mm thick, 2m long and with t&g ends so can be laid directly onto the joists. Therefore I would be grateful for some advice on the following.
1. If you lay the boards at right angles to the old boards am I right in assuming that there is no need for any underlay or ply (I will be secretly nailing).
2. If you do lay them the same way as the old boards and the old boards are relatively flat is there any need for underlay/ply.
3. I'm doing the whole 1st floor and therefore should there be breaks to allow for expansion or can I just carry on through the doorways onto the landing and other rooms.
4. Are these the correct nails for invisible nailing - the instructions say that they need to use 65mm nails. http://www.screwfix.com/prods/19381...k;jsessionid=P3EFHMTLDFQWSCSTHZOCFEY?ts=65928
Many thanks for any replies.
1. If you lay the boards at right angles to the old boards am I right in assuming that there is no need for any underlay or ply (I will be secretly nailing).
2. If you do lay them the same way as the old boards and the old boards are relatively flat is there any need for underlay/ply.
3. I'm doing the whole 1st floor and therefore should there be breaks to allow for expansion or can I just carry on through the doorways onto the landing and other rooms.
4. Are these the correct nails for invisible nailing - the instructions say that they need to use 65mm nails. http://www.screwfix.com/prods/19381...k;jsessionid=P3EFHMTLDFQWSCSTHZOCFEY?ts=65928
Many thanks for any replies.